unload plugins on quit (fixes #808)

git-svn-id: http://svn.osgeo.org/qgis/trunk/qgis@9249 c8812cc2-4d05-0410-92ff-de0c093fc19c

Author: jef

src/app/qgisapp.cpp

@@ -1740,6 +1740,8 @@ void QgisApp::saveRecentProjectPath( QString projectPath, QSettings & settings )
 
 void QgisApp::saveWindowState()
 {
+  QgsPluginRegistry::instance()->unloadAll();
+
   // store window and toolbar positions
   QSettings settings;
   // store the toolbar/dock widget settings using Qt4 settings API

src/app/qgspluginregistry.cpp

@@ -19,6 +19,7 @@
 
 #include "qgspluginregistry.h"
 #include "qgspluginmetadata.h"
+#include "qgisplugin.h"
 
 QgsPluginRegistry *QgsPluginRegistry::_instance = 0;
 QgsPluginRegistry *QgsPluginRegistry::instance()
@@ -85,3 +86,12 @@ void QgsPluginRegistry::removePlugin( QString name )
 {
   plugins.erase( name );
 }
+
+void QgsPluginRegistry::unloadAll()
+{
+  for(std::map<QString, QgsPluginMetadata*>::iterator it=plugins.begin(); 
+      it!=plugins.end();
+      it++)
+    if( it->second->plugin() )
+      it->second->plugin()->unload();
+}

src/app/qgspluginregistry.h

@@ -47,6 +47,8 @@ class QgsPluginRegistry
     void addPythonPlugin( QString packageName, QString pluginName );
 //! Remove a plugin from the list of loaded plugins
     void removePlugin( QString name );
+//! Unload plugins
+    void unloadAll();
   protected:
 //! protected constructor
     QgsPluginRegistry();
@@ -55,4 +57,3 @@ class QgsPluginRegistry
     std::map<QString, QgsPluginMetadata*> plugins;
 };
 #endif //QgsPluginRegistry_H
-